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Chloroform formation by chlorination of aqueous algae suspensions: online monitoring via membrane introduction mass spectrometry

机译:通过氯化藻类水悬浮液形成氯仿:通过膜引入质谱在线监测

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摘要

Membrane introduction mass spectrometry (MIMS) was used to perform on-line monitoring of the chloroform formation via the chlorination of aqueous suspensions of several green and blue-green Brazilian algae (Microcystis panniformis, Selenastrum sp., Scenedesmus sp., Monoraphidium sp. (strain 354), Monoraphidium sp. (strain 960), and Staurastrum sp.). The influence of major parameters, such as temperature, pH, initial concentration of sodium hypochloride, filtration, and reaction time, on chloroform formation was evaluated. It was verified that the chloroform formation is strongly dependent on the alga type and is favored by high temperatures, pH, sodium hypochloride initial concentration and reaction time. Finally, filtered algae samples produce smaller amounts of chloroform in comparison to the rough suspension.
机译:膜引入质谱法(MIMS)用于对几种绿色和蓝绿色巴西藻类(Microcystis panniformis,Selenastrum sp。,Scenedesmus sp。,Monoraphidium sp。(菌株354),独栖phi属菌种(菌株960)和Staurastrum属菌种)。评估了温度,pH,次氯酸钠的初始浓度,过滤和反应时间等主要参数对氯仿形成的影响。证实了氯仿的形成强烈依赖于藻类类型,并且受到高温,pH,次氯酸钠初始浓度和反应时间的影响。最后,与粗悬浮液相比,过滤后的藻类样品产生的氯仿量更小。

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